Home / 1,210,120.20-1,815,190.64-345,552.88

Finding the Fourth Proportional to 1,210,120.20, 1,815,190.64 and 345,552.88

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Solution

The fourth proportional to 1,210,120.20, 1,815,190.64 and 345,552.88 is: 518,332.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,120.20 : 1,815,190.64 = 345,552.88 : x
  2. Step 2: Convert to fraction form
    1,210,120.20/1,815,190.64 = 345,552.88/x
  3. Step 3: Cross multiply
    1,210,120.20x = 1,815,190.64 × 345,552.88
  4. Step 4: Simplify right side
    1,210,120.20x = 627,244,353,401.04
  5. Step 5: Solve for x
    x = 627,244,353,401.04/1,210,120.20
  6. Step 6: Final answer
    x = 518,332.27

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.